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ToBySome 8x21 Small Compact Lightweight Binoculars Wonderful companion of outdoor entertainment activities, help you capture clear every moment! Exciting sports, in the audience. / Backpacking, camping trip. The star-studded star concert. / Zoo sightseeing, see giraffes, tigers and so on. Mnini telescope, the best gift. Specification data: - Lightweight mini size 【4.14x3.62x2.35 inch 0.38 lb】 - Roof Prism binocular 【Optical glass】 - Lens coating: Fully coated - Model: 8 x 21 - Magnification: 8 X - Objective diameter: 21mm - Eyepiece diameter:13mm - Angle of field: 6 degree - View of field: 369 ft/1,000Yds&131m/1000m - Exit pupil diameter: 5.2mm - Eye relief: 16mm - Mini focus length: 2m